/Engine/Plugins/Media/ElectraUtil/Source/ElectraBase/Public/MediaMetaDataDecoderOutput.h
Returns the base time (the "zero point") of the track, if available, to calculate the relative time of this metadata fromGetTime()if this is based on some non-zero anchor.
[TOptional](API\Runtime\Core\IO\TOptional)< [FDecoderTimeStamp](API\Plugins\ElectraBase\FDecoderTimeStamp) > GetTrackBaseTime() const